C# 使用Microsoft graph将文件上载到onedrive for business

我正在尝试使用web API将一个图像文件（12 Kb大小）上载到管理帐户onedrive for business。 我可以毫无错误地获取驱动器、根目录和子目录项

var drive = FilesHelper.GetUserPersonalDrive();
var root = FilesHelper.GetUserPersonalDriveRoot();
var childrenItems = FilesHelper.ListFolderChildren(drive.Id, root.Id);

但当我尝试上载图像文件时：

var new FileOnRoot=  UploadSampleFile(drive,root,Server.MapPath("~/drive.png"));

它会引发一个异常：

{
  "error": {
    "code": "unauthenticated",
    "message": "The caller is not authenticated.",
    "innerError": {
      "request-id": "1bd87259-4eef-4c36-8356-2f8fcc274608",
      "date": "2016-12-01T10:35:50"
    }
  }
}

我允许Graph API的委托权限下的几乎所有读取权限和所有应用程序权限

private DriveItem UploadSampleFile(Drive drive, DriveItem newFolder, String filePath)
    {
        DriveItem result = null;
        Stream memPhoto = getFileContent(filePath);

        try
        {
            if (memPhoto.Length > 0)
            {
                String contentType = "image/png";
                result = FilesHelper.UploadFileDirect(drive.Id, newFolder.Id,
                    new DriveItem
                    {
                        File = new File { },
                        Name = filePath.Substring(filePath.LastIndexOf("\\") + 1),
                        ConflictBehavior = "rename",
                    },
                    memPhoto,
                    contentType);
            }
        }
        catch (Exception ex)
        {
    }

文件助手类

public static class FilesHelper
{
    public static Drive GetUserPersonalDrive()
    {
        String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
            String.Format("{0}me/drive",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri));

        var drive = JsonConvert.DeserializeObject<Drive>(jsonResponse);
        return (drive);
    }

    public static DriveItem GetUserPersonalDriveRoot()
    {
        String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
            String.Format("{0}me/drive/root",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri));

        var folder = JsonConvert.DeserializeObject<DriveItem>(jsonResponse);
        return (folder);
    }

    public static List<DriveItem> ListFolderChildren(String driveId, String folderId, Int32 numberOfItems = 100)
    {
        String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
            String.Format("{0}drives/{1}/items/{2}/children?$top={3}",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
                driveId, 
                folderId,
                numberOfItems));

        var driveItems = JsonConvert.DeserializeObject<DriveItemList>(jsonResponse);
        return (driveItems.DriveItems);
    }


    public static Stream GetFileContent(String driveId, String fileId, String contentType)
    {
        Stream fileContent = MicrosoftGraphHelper.MakeGetRequestForStream(
            String.Format("{0}drives/{1}/items/{2}/content",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
                driveId,
                fileId),
                contentType);

        return (fileContent);
    }

    public static DriveItem UploadFileDirect(String driveId, String parentFolderId,
        DriveItem file, Stream content, String contentType)
    {
        var jsonResponse = MicrosoftGraphHelper.MakePutRequestForString(
            String.Format("{0}drives/{1}/items/{2}/children/{3}/content",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
                driveId,
                parentFolderId,
                file.Name),
                content,
                contentType);

        var uploadedFile = JsonConvert.DeserializeObject<DriveItem>(jsonResponse);

        return (uploadedFile);
    }
}

public static class FilesHelper
{
    public static Drive GetUserPersonalDrive()
    {
        String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
            String.Format("{0}me/drive",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri));

        var drive = JsonConvert.DeserializeObject<Drive>(jsonResponse);
        return (drive);
    }

    public static DriveItem GetUserPersonalDriveRoot()
    {
        String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
            String.Format("{0}me/drive/root",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri));

        var folder = JsonConvert.DeserializeObject<DriveItem>(jsonResponse);
        return (folder);
    }

    public static List<DriveItem> ListFolderChildren(String driveId, String folderId, Int32 numberOfItems = 100)
    {
        String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
            String.Format("{0}drives/{1}/items/{2}/children?$top={3}",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
                driveId, 
                folderId,
                numberOfItems));

        var driveItems = JsonConvert.DeserializeObject<DriveItemList>(jsonResponse);
        return (driveItems.DriveItems);
    }


    public static Stream GetFileContent(String driveId, String fileId, String contentType)
    {
        Stream fileContent = MicrosoftGraphHelper.MakeGetRequestForStream(
            String.Format("{0}drives/{1}/items/{2}/content",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
                driveId,
                fileId),
                contentType);

        return (fileContent);
    }

    public static DriveItem UploadFileDirect(String driveId, String parentFolderId,
        DriveItem file, Stream content, String contentType)
    {
        var jsonResponse = MicrosoftGraphHelper.MakePutRequestForString(
            String.Format("{0}drives/{1}/items/{2}/children/{3}/content",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
                driveId,
                parentFolderId,
                file.Name),
                content,
                contentType);

        var uploadedFile = JsonConvert.DeserializeObject<DriveItem>(jsonResponse);

        return (uploadedFile);
    }
}

公共静态类文件帮助器
{
公共静态驱动器GetUserPersonalDrive（）
{
字符串jsonResponse=MicrosoftGraphHelper.MakeGetRequestForString(
String.Format（“{0}me/drive”，
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri）；
var drive=JsonConvert.DeserializeObject（jsonResponse）；
返回（驱动）；
}
公共静态驱动项GetUserPersonalDriveRoot（）
{
字符串jsonResponse=MicrosoftGraphHelper.MakeGetRequestForString(
String.Format（“{0}me/drive/root”，
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri）；
var folder=JsonConvert.DeserializeObject（jsonResponse）；
返回（文件夹）；
}
公共静态列表ListFolderChildren（String driveId、String folderId、Int32 numberOfItems=100）
{
字符串jsonResponse=MicrosoftGraphHelper.MakeGetRequestForString(
String.Format（“{0}驱动器/{1}/items/{2}/children？$top={3}”，
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri，
疯狂的，
福德里德，
数量);；
var driveItems=JsonConvert.DeserializeObject（jsonResponse）；
返回（driveItems.driveItems）；
}
公共静态流GetFileContent（字符串驱动ID、字符串文件ID、字符串内容类型）
{
Stream fileContent=MicrosoftGraphHelper.MakeGetRequestForStream(
String.Format（“{0}驱动器/{1}/items/{2}/content”，
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri，
疯狂的，
文件ID），
内容类型）；
返回（文件内容）；
}
公共静态DriveItem UploadFileDirect（字符串driveId、字符串parentFolderId、，
DriveItem文件、流内容、字符串内容类型）
{
var jsonResponse=MicrosoftGraphHelper.MakePutRequestForString(
String.Format（“{0}驱动器/{1}/items/{2}/children/{3}/content”，
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri，
疯狂的，
父辈，
文件名），
内容,，
内容类型）；
var uploadedFile=JsonConvert.DeserializeObject（jsonResponse）；
返回（上传文件）；
}
}

MicrosoftGraphHelper类

public static class FilesHelper
{
    public static Drive GetUserPersonalDrive()
    {
        String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
            String.Format("{0}me/drive",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri));

        var drive = JsonConvert.DeserializeObject<Drive>(jsonResponse);
        return (drive);
    }

    public static DriveItem GetUserPersonalDriveRoot()
    {
        String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
            String.Format("{0}me/drive/root",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri));

        var folder = JsonConvert.DeserializeObject<DriveItem>(jsonResponse);
        return (folder);
    }

    public static List<DriveItem> ListFolderChildren(String driveId, String folderId, Int32 numberOfItems = 100)
    {
        String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
            String.Format("{0}drives/{1}/items/{2}/children?$top={3}",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
                driveId, 
                folderId,
                numberOfItems));

        var driveItems = JsonConvert.DeserializeObject<DriveItemList>(jsonResponse);
        return (driveItems.DriveItems);
    }


    public static Stream GetFileContent(String driveId, String fileId, String contentType)
    {
        Stream fileContent = MicrosoftGraphHelper.MakeGetRequestForStream(
            String.Format("{0}drives/{1}/items/{2}/content",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
                driveId,
                fileId),
                contentType);

        return (fileContent);
    }

    public static DriveItem UploadFileDirect(String driveId, String parentFolderId,
        DriveItem file, Stream content, String contentType)
    {
        var jsonResponse = MicrosoftGraphHelper.MakePutRequestForString(
            String.Format("{0}drives/{1}/items/{2}/children/{3}/content",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
                driveId,
                parentFolderId,
                file.Name),
                content,
                contentType);

        var uploadedFile = JsonConvert.DeserializeObject<DriveItem>(jsonResponse);

        return (uploadedFile);
    }
}

public static class FilesHelper
{
    public static Drive GetUserPersonalDrive()
    {
        String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
            String.Format("{0}me/drive",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri));

        var drive = JsonConvert.DeserializeObject<Drive>(jsonResponse);
        return (drive);
    }

    public static DriveItem GetUserPersonalDriveRoot()
    {
        String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
            String.Format("{0}me/drive/root",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri));

        var folder = JsonConvert.DeserializeObject<DriveItem>(jsonResponse);
        return (folder);
    }

    public static List<DriveItem> ListFolderChildren(String driveId, String folderId, Int32 numberOfItems = 100)
    {
        String jsonResponse = MicrosoftGraphHelper.MakeGetRequestForString(
            String.Format("{0}drives/{1}/items/{2}/children?$top={3}",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
                driveId, 
                folderId,
                numberOfItems));

        var driveItems = JsonConvert.DeserializeObject<DriveItemList>(jsonResponse);
        return (driveItems.DriveItems);
    }


    public static Stream GetFileContent(String driveId, String fileId, String contentType)
    {
        Stream fileContent = MicrosoftGraphHelper.MakeGetRequestForStream(
            String.Format("{0}drives/{1}/items/{2}/content",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
                driveId,
                fileId),
                contentType);

        return (fileContent);
    }

    public static DriveItem UploadFileDirect(String driveId, String parentFolderId,
        DriveItem file, Stream content, String contentType)
    {
        var jsonResponse = MicrosoftGraphHelper.MakePutRequestForString(
            String.Format("{0}drives/{1}/items/{2}/children/{3}/content",
                MicrosoftGraphHelper.MicrosoftGraphV1BaseUri,
                driveId,
                parentFolderId,
                file.Name),
                content,
                contentType);

        var uploadedFile = JsonConvert.DeserializeObject<DriveItem>(jsonResponse);

        return (uploadedFile);
    }
}

公共静态类文件帮助器
{
公共静态驱动器GetUserPersonalDrive（）
{
字符串jsonResponse=MicrosoftGraphHelper.MakeGetRequestForString(
String.Format（“{0}me/drive”，
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri）；
var drive=JsonConvert.DeserializeObject（jsonResponse）；
返回（驱动）；
}
公共静态驱动项GetUserPersonalDriveRoot（）
{
字符串jsonResponse=MicrosoftGraphHelper.MakeGetRequestForString(
String.Format（“{0}me/drive/root”，
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri）；
var folder=JsonConvert.DeserializeObject（jsonResponse）；
返回（文件夹）；
}
公共静态列表ListFolderChildren（String driveId、String folderId、Int32 numberOfItems=100）
{
字符串jsonResponse=MicrosoftGraphHelper.MakeGetRequestForString(
String.Format（“{0}驱动器/{1}/items/{2}/children？$top={3}”，
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri，
疯狂的，
福德里德，
数量);；
var driveItems=JsonConvert.DeserializeObject（jsonResponse）；
返回（driveItems.driveItems）；
}
公共静态流GetFileContent（字符串驱动ID、字符串文件ID、字符串内容类型）
{
Stream fileContent=MicrosoftGraphHelper.MakeGetRequestForStream(
String.Format（“{0}驱动器/{1}/items/{2}/content”，
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri，
疯狂的，
文件ID），
内容类型）；
返回（文件内容）；
}
公共静态DriveItem UploadFileDirect（字符串driveId、字符串parentFolderId、，
DriveItem文件、流内容、字符串内容类型）
{
var jsonResponse=MicrosoftGraphHelper.MakePutRequestForString(
String.Format（“{0}驱动器/{1}/items/{2}/children/{3}/content”，
MicrosoftGraphHelper.MicrosoftGraphV1BaseUri，
疯狂的，
父辈，
文件名），
内容,，
内容类型）；
var uploadedFile=JsonConvert.DeserializeObject（jsonResponse）；
返回（上传文件）；
}
}

您说您允许所有读取权限。但是，将文件上载到OneDrive需要写入权限。请确保已选择Files.ReadWrite委托权限（假设您使用的是委托流）。另外，请确保在选择权限时采用权限最少的方法。如果您使用的是委托流，请不要选择应用程序权限，反之亦然。你应该遵循指南

此外，我们还提供了一系列示例，这些示例可能会对您有所帮助，可以调用REST，也可以通过Microsoft Graph.Net客户端库进行调用，就像这样，还有用于上载文件的代码。您可以在GitHub上找到我们的SDK和示例

---

希望这能有所帮助，

您说您允许所有读取权限。但是，将文件上载到OneDrive需要写入权限。请确保已选择这些文件